(In reply to Ulrich Windl from comment #6) > (In reply to Takashi Iwai from comment #1) > > Could you try to pass amdgpu.ppfeaturemask=1 option and see whether it > > changes the behavior? > > Just one question: Was it expected that OpenGL applications are terribly > slow when setting that parameter? Not really, but with the given error from the driver, it's no surprise...